Mechanical and marine engineering science ... Specially written as a handbook to the Board of Trade examinations for extra-first-class engineers (1909)
Somerscales, A. N · Glasgow : J. Munro; London, Simpkin, Marshall, Hamilton, Kent · leaf 156
uppose theweight lifted is 4tons. The verticalpart AX evidentlycarries the entireweight, hence thetension in AX isequivalent to, or isthe resultant of, thetensions on the twolegs AB and AC.If we now produceXA downwards andmake Ad = 4 in. and complete the parallelogram by drawing dbparallel to AC… … Fig. 53 The Parallelograxa of Velocities* The principle of the parallelogram of velocities enables us tocombine two velocities in the same way as we combine two forces.As an illustration, suppose a cricket ball is moving from one wicketto the other at a speed of 20 ft. per second. This is…
Naval architecture
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